'92 e4od noise
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Cargo Master
Joined: Sep 2005
Posts: 2,975
Likes: 909
From: Montana
'92 e4od noise
I posted this in the 87-96 forum, with no luck... Hopefully someone here can give advice. My daughter recently got a '92 f-150 SCAB 4x4, 302 w/ E4OD. The trans needed new seals in the front pump, so I did those and replaced the filter and fluid while at it. Now it runs fine, but it makes a nasty ticking or clicking noise. It is definitely coming from the front of the trans. I was thinking it was a cracked flexplate, so I pulled the inspection cover yesterday, but could not see any cracks. I have heard that sometimes you cannot see the cracks, as they are tiny, or around the crank bolts, which are not visible from the inspection cover. Is this the case? Also, could the torque converter be the culprit? I haven't heard of this kind of noise coming from the TC, but then, I've dealt mainly with manuals. Thanks.
Transmission Rebuilder
Joined: Jul 2008
Posts: 1,570
Likes: 63
From: North Georgia
Sometimes during installation or removal the metal shield between the engine and transmission can get bent. The converter bolts can hit this plate as they fly by. Start it up and crawl underneath and push on that plate with a pry bar, if the noise changes then suspect the shield if noise stays the same suspect the flywheel.
If it wasn't doing it before I would think shield.
If it wasn't doing it before I would think shield.
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Cargo Master
Joined: Sep 2005
Posts: 2,975
Likes: 909
From: Montana
Sometimes during installation or removal the metal shield between the engine and transmission can get bent. The converter bolts can hit this plate as they fly by. Start it up and crawl underneath and push on that plate with a pry bar, if the noise changes then suspect the shield if noise stays the same suspect the flywheel.
If it wasn't doing it before I would think shield.
If it wasn't doing it before I would think shield.
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Cargo Master
Joined: Sep 2005
Posts: 2,975
Likes: 909
From: Montana
Well, I ended up swapping in a new flex plate today, and dammit, the noise is still there... I am guessing the pump is making it, since the torque converter appears to be allowing for proper shifts (although 1-2 is a little firm...). The trans is also leaking a bit, but the seals in the pump are brand new. Any other ideas before I pull the pump again?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
The torque converter appears to be allowing for proper shifts? How is the torque converter involved with the shifts? Answer: It is NOT involved with the shifts. So you don't know if the converter is good or bad.
When you had the trans out and the flex plate wasn't cracked you should have stopped right there. Now you get to pull the trans again and find the problem.
When you had the trans out and the flex plate wasn't cracked you should have stopped right there. Now you get to pull the trans again and find the problem.
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Cargo Master
Joined: Sep 2005
Posts: 2,975
Likes: 909
From: Montana
The torque converter appears to be allowing for proper shifts? How is the torque converter involved with the shifts? Answer: It is NOT involved with the shifts. So you don't know if the converter is good or bad.
When you had the trans out and the flex plate wasn't cracked you should have stopped right there. Now you get to pull the trans again and find the problem.
When you had the trans out and the flex plate wasn't cracked you should have stopped right there. Now you get to pull the trans again and find the problem.
I only had the lift for a very limited time, so stopping right there to further inspect anything was not feasible (nor was it thought to be needed, seeing as how there were in fact a couple, very small cracks in the old flex plate- we thought that was the problem).
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Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
There were a couple very small cracks in the flex plate, and it is my understanding that a bad torque converter would not create enough line pressure for proper shifts... No need to get snooty. You said yourself that you've never heard of a converter making a ticking noise.
I only had the lift for a very limited time, so stopping right there to further inspect anything was not feasible (nor was it thought to be needed, seeing as how there were in fact a couple, very small cracks in the old flex plate- we thought that was the problem).
I only had the lift for a very limited time, so stopping right there to further inspect anything was not feasible (nor was it thought to be needed, seeing as how there were in fact a couple, very small cracks in the old flex plate- we thought that was the problem).
The torque converter does not create line pressure. That's the pump's job. The torque converter's job is to transfer torque from the engine to the transmission. It is not involved with shifting the transmission.
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